Last year, Infiniti announced its new naming convention, under which all sedans, convertibles and coupes would be named starting with ‘Q,’ and SUVs/crossovers with ‘QX.’ Either would be followed by a two-digit number that denotes the segment the vehicle is in instead of the size of its engine.

The Hong Kong-headquartered premium carmaker said at the time that the move would¬†allow the customer to identify a car’s position in the line-up more easily. By not divulging engine displacements in its model names, the brand can also better adapt to the engine downsizing trend, where size doesn’t mean as much.¬†Now Infiniti gives us a third reason in this video: it says the naming convention pays tribute to its first-ever model, the 1989 Q45 sedan.

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The first new vehicle under the rule was the Q50 compact exec (pictured), which made its debut in January. The others in the portfolio have since followed suit, with the M sedan becoming the Q70, the G coupe and convertible becoming the Q60, and the EX, JX, FX and QX high-riders respectively becoming the QX50, QX60, QX70 and QX80.

Funnily enough, despite the fact that its two-door derivatives have already been renamed, the G sedan (which the Q50 will eventually replace) will keep its maiden name, as Infiniti will continue selling it alongside the new car in the US until 2015, reports say.

Yes, the Infiniti Q50 is Malaysia-bound, and we’ve tried it – watch this space for our driving impressions.